| Functional Group | Molecule | Philic/Phobic | Polarity | pH | Found In | | ---------------- | -------- | --------------- | ------------- | ------- | --------------- | | Hydroxyl | R-OH | Hydrophilic | Polar | Neutral | Alcohols | | Carbonyl | C=O | Hydrophilic | Polar | Neutral | Sugars | | Carboxyl | R-COOH | Hydrophilic | Polar | Acidic | Fatty Acids | | Amino | R-NH2 | Hydrophilic | Polar | Basic | Amino Acids | | Phosphate | R-PO4 | Hydrophilic | Polar | Acidic | Phospholipids | | Methyl | R-CH3 | Hydro**phobic** | **Non**-polar | Neutral | DNA Methylation |